25280532 has 48 divisors (see below), whose sum is σ = 66024000. Its totient is φ = 8364960.

The previous prime is 25280527. The next prime is 25280533. The reversal of 25280532 is 23508252.

25280532 is a `hidden beast` number, since 2 + 52 + 80 + 532 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 25280496 and 25280505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25280533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15307 + ... + 16877.

It is an arithmetic number, because the mean of its divisors is an integer number (1375500).

Almost surely, 2^25280532 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25280532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33012000).

25280532 is an abundant number, since it is smaller than the sum of its proper divisors (40743468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25280532 is a wasteful number, since it uses less digits than its factorization.

25280532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733 (or 1725 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 25280532 is about 5027.9749402717. The cubic root of 25280532 is about 293.4914155950.

Adding to 25280532 its reverse (23508252), we get a palindrome (48788784).

The spelling of 25280532 in words is "twenty-five million, two hundred eighty thousand, five hundred thirty-two".